PULLEY DEVICE FOR A CHAIN OR BELT AND MOTOR VEHICLE EQUIPPED WITH SUCH A DEVICE

摘要

A pulley device for one of a chain or belt; the pulley device includes two rolling bearings, each having an inner ring, an outer ring rotatable relative to the inner ring around a shared central axis, and a row of rolling elements mounted in a rolling chamber defined between the inner ring and an outer ring. A pulley is secured in rotation with the outer rings of the two rolling bearings and provided with an outer radial surface for engaging with one of a chain or a belt. The pulley device also includes a feature for exerting an axial load parallel to the shared central axis onto the outer rings. The axial load urges the outer rings one toward the other, or opposite one another.

主权项

1. A pulley device for one of a chain or belt, the pulley device comprising:
two rolling bearings each rolling bearing having:
an inner ring,an outer ring rotatable relative to the inner ring around a shared central axis, andat least one row of rolling elements mounted in a rolling chamber defined between the inner ring and the outer ring, a pulley secured in rotation with the outer rings of the two rolling bearings and provided with an outer radial surface for engaging with one of a chain or a belt; and a feature for exerting an axial load parallel to the shared central axis onto the outer rings, the axial load urging the outer rings in one of the following directions: (a) one toward the other, or (b) opposite one another.